Who married Demetrius I Starshy?

Dmitry the Older or Dmitry of Bryansk (Lithuanian: Dmitrijus Algirdaitis Brianskietis, Polish: Dymitr Olgierdowicz, died on 12 August 1399 in the Battle of the Vorskla River) was the Lithuanian prince of Bryansk from 1356 to 1379 and from 1388 to 1399. Dmitry was the second eldest son of Algirdas, the grand duke of Lithuania, and his first wife Maria of Vitebsk.